Modified gravity and binary pulsars: the Lorentz violating case

TL;DR

This paper discusses how binary pulsar observations can test Lorentz-violating gravity theories, which are relevant for quantum gravity and modify gravitational laws across all scales.

Contribution

It introduces the importance of binary pulsar dynamics in constraining Lorentz-violating gravity theories, highlighting their significance in quantum gravity research.

Findings

Binary pulsars can effectively test Lorentz-violating gravity theories.

Lorentz violation impacts gravitational dynamics at all scales.

Constraints on alternative gravity models are derived from pulsar data.

Abstract

The dynamics of binary pulsars can be used to test different aspects of gravitation. This is particularly important to constrain alternatives to general relativity in regimes which are not probed by other methods. In this short contribution, I will describe the case of theories of gravity without Lorentz invariance. The latter are important in the context of quantum gravity and modify the laws of gravity at basically all scales.